I took extensive video and pictures when i moved as the house was not, to most people in move in condition, obviously cleaned but very cheap and very old carpet, large areas of rooms that weren't entirely painted weird hardware sticking out of walls, screw holes or remaining screws and nails, several patched but not painted areas, tons of areas with drawing, water, oil marks on the walls (from a centimeter to 1 foot) etc etc! 

We're trying to decide if we should rent or sell.If we sell, we are looking to get most of our money back that we put in (down payment, small updates like paint and appliance purchases).

@John Morgan you could also paint with odor blocking primer and float laminate over it.

I cant paint it myself.

The old window was painted shut and never opened so I'm guessing there won't be any moisture issues. 

I decided not to do it myself because I was tired from painting and cleaning...my house was filthy.

Womp wompIf $4000 is 3 years cash flow this is probably not a good deal.I have a minimum cash flow requirement of about $4000/year due to the cost of things like roof, HVAC, vacancy, painting etc.Have you penciled the deal out to make sure it makes sense?

And the upcoming remodel.... still has original 1984 paint, flooring and furniture. 

You might want to put an elastomeric water barrier paint on it but just wait to see what happens. 

I started with a property that needed mainly cosmetic fixes -- new granite, knobs, paint, floors, etc.